This may not be a high priority for you, but any chance of including a image version for each mapset to help with previewing? The web site (http://www.projectlinework.org/) has a nice small preview image, but it would be nice to be able to see the entire map without having to pull down the actual GIS files. Just a simple png of the full map would suffice.
But I'm not your target audience as I just want to view the maps and will likely never actually use your maps as they should be used. Thanks for making them though.